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IRVINE, CA - SEPTEMBER 12: Taco Bell's iconic sauce packets. (Photo by Joshua Blanchard/Getty Images for Taco Bell)

Taco Bell will start reusing hot sauce packets

Journalists watch a screen showing China's President Xi Jinping delivering a speech during the opening of the Boao Forum for Asia (BFA) Annual Conference 2021 in Boao, south China's Hainan province on April 20, 2021. - China OUT (Photo by STR / AFP) / China OUT / The erroneous mention[s] appearing in the metadata of this photo by STR has been modified in AFP systems in the following manner: [removes 'LIVE IMAGE' from caption]. Please immediately remove the erroneous mention[s] from all your online services and delete it (them) from your servers. If you have been authorized by AFP to distribute it (them) to third parties, please ensure that the same actions are carried out by them. Failure to promptly comply with these instructions will entail liability on your part for any continued or post notification usage. Therefore we thank you very much for all your attention and prompt action. We are sorry for the inconvenience this notification may cause and remain at your disposal for any further information you may require. - China OUT (Photo by STR/AFP via Getty Images)

Xi Jinping says 'bossing others around' won't work as US ups pressure on China

The morning rush hour on the street Bismarckstrasse is pictured during morning light on February 25, 2021 in Berlin, Germany. (Photo by Florian Gaertner/Photothek via Getty Images)

'Dire warning' for the planet: Coal is powering the economic recovery

In this photo provided by the Gallatin County Sheriff's Office, officers from the sheriff's office and West Yellowstone Police Department are seen near the scene of a grizzly bear mauling just outside Yellowstone National Park near West Yellowstone, Mont. on April, 15, 2021. Authorities said Charles "Carl" Mock died Saturday of injuries sustained in the attack. (Gallatin County Sheriff's Office via AP)

Backcountry guide mauled to death while fishing near Yellowstone National Park

Piran, Slovenia, was part of the Venetian empire.

The mini Venices around Europe

An indigenous woman takes part in a protest along with people from various ethnic groups in a protest against the proposal of the federal government to legalize mining in indigenous lands, in front of Planalto Palace in Brasilia on April 19, 2021. - As Indigenous Day is celebrated in Brazil on April 19, the protesters criticized the policies of President Jair Bolsonaro's government and the withdrawal of their rights guaranteed in the constitution. (Photo by EVARISTO SA / AFP) (Photo by EVARISTO SA/AFP via Getty Images)

Brazil's indigenous tribes protest bill that would allow commercial mining on their land

Blinken warns US is falling behind China in race to capitalize on climate opportunities

The White House is seen on October 4, 2020 in Washington, DC.

Biden White House removes Trump-era scientist from overseeing climate report

A banner at the inaugural Earth Day, New York City, 22nd April 1970. Earth Day is held annually to raise awareness of environmental issues. (Photo by Archive Photos/Getty Images)

See how the climate crisis has impacted Earth

NASA's Ingenuity Mars Helicopter took this shot while hovering over the Martian surface on April 19, 2021, during the first instance of powered, controlled flight on another planet. It used its navigation camera, which autonomously tracks the ground during flight.

NASA's Mars helicopter Ingenuity successfully completed its historic first flight

July 9, 2013

Mosaic of the Valles Marineris hemisphere of Mars projected into point perspective, a view similar to that which one would see from a spacecraft. The distance is 2500 kilometers from the surface of the planet, with the scale being .6km/pixel. The mosaic is composed of 102 Viking Orbiter images of Mars. The center of the scene (lat -8, long 78) shows the entire Valles Marineris canyon system, over 2000 kilometers long and up to 8 kilometers deep, extending form Noctis Labyrinthus, the arcuate system of graben to the west, to the chaotic terrain to the east. Many huge ancient river channels begin from the chaotic terrain from north-central canyons and run north. The three Tharsis volcanoes (dark red spots), each about 25 kilometers high, are visible to the west. South of Valles Marineris is very ancient terrain covered by many impact craters.

Credit
NASA/JPL-Caltech

The best photos of Mars

CNN to host climate crisis town hall with Biden administration officials

As a megadrought persists, new projections show a key Colorado River reservoir could sink to a record low later this year

renewable energy hydropower solar kenya, tanzania sub-saharan africa spc_00004117.png

From hydropower to solar, this is the golden age of renewable energy in Africa

Elephants at Kruger National Park in South Africa.

Suspected poacher trampled to death by elephants in South Africa

Beluga whales in the Disney+ docuseries 'Secrets of the Whales' (Peter Kragh/National Geographic for Disney+).

Earth Day programs come in many shades of green, but this year some seek rays of hope

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The climate crisis is taking these farmers' most valuable resource